1025340543637 has 2 divisors, whose sum is σ = 1025340543638. Its totient is φ = 1025340543636.

The previous prime is 1025340543481. The next prime is 1025340543641. The reversal of 1025340543637 is 7363450435201.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 567127980241 + 458212563396 = 753079^2 + 676914^2 .

It is a cyclic number.

It is not a de Polignac number, because 1025340543637 - 2¹⁵ = 1025340510869 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1025340543593 and 1025340543602.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1025340543737) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512670271818 + 512670271819.

It is an arithmetic number, because the mean of its divisors is an integer number (512670271819).

Almost surely, 2^{1025340543637} is an apocalyptic number.

It is an amenable number.

1025340543637 is a deficient number, since it is larger than the sum of its proper divisors (1).

1025340543637 is an equidigital number, since it uses as much as digits as its factorization.

1025340543637 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 907200, while the sum is 43.

Adding to 1025340543637 its reverse (7363450435201), we get a palindrome (8388790978838).

The spelling of 1025340543637 in words is "one trillion, twenty-five billion, three hundred forty million, five hundred forty-three thousand, six hundred thirty-seven".